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Arnold & Son - Instrument CTB

Arnold & Sonunveiled the Instrument CTB, the first wristwatch to combine a central true beat seconds hand and a central chronograph seconds hand, a challenging solution that was awarded with two patents.

Both hands are on the same axis but with different jumping intervals. In fact, while the chronograph seconds runs in a continuous way, the true beat seconds hand beats incrementally. Sometimes referred to as a dead beat seconds, the true beat seconds is a precision function which allows for more accurate reading.

When the chronograph hand is started, it gives the impression that it can catch up to the true beat seconds hand, but this never happens since the true beat seconds hand jumps away each second.